Casey O’Neill took on fellow flyweight Eduarda Moura earlier tonight (Sat., Sept. 19, 2026) at UFC 331 LIVE on Paramount+ at the Crypto.com Arena in Los Angeles, California.
Moura acted quickly to start the fight and was able to land top control on the ground. That’s exactly where the Brazilian grappler wanted to be, but after a couple of hard shots, he couldn’t do much damage. O’Neill held his hands tight and did well to threaten with transitions from the back.
Moments later, O’Neill was able to create space and began to push Moura away from him. During the scramble, O’Neill quickly grabbed Moura’s arm and immediately locked the armbar. Moura had no choice but to tap for the first time in his career.
It was one of the slickest armbar performances in years, and even more impressive when Joe Rogan and Daniel Cormier slowed it down and crushed it at cageside.
Check out the video highlights below:
Click for complete UFC 331 results, coverage and highlights HERE.